Clamp



FIG. 1 is a bottom view of a clamp of the claimed design.

FIG. 2 is a front elevational view of the clamp of FIG. 1.

FIG. 3 is a top view of the clamp of FIG. 2.

FIG. 4 is a right side view of the clamp of FIG. 2.

FIG. 5 is a left side view of the clamp of FIG. 2.

FIG. 6 is a rear elevational view of the clamp of FIG. 2; and,

FIG. 7 is a perspective view of the clamp of FIG. 2.

I claim the ornamental design for a clamp, as shown and described.